World Resources Institute
Scope 3 Emissions Reporting
The Greenhouse Gas Protocol Corporate Value Chain (Scope 3) Accounting and Reporting Standard provides requirements and guidance for companies and other organizations to prepare and publicly report a GHG emissions inventory that includes indirect emissions resulting from value chain activities (i.e., scope 3 emissions).
the Greenhouse Gas Protocol Product Life Cycle Accounting and Reporting Standard provides requirements and guidance for companies and other organizations to quantify and publicly report an inventory of GHG emissions and removals associated with a specific product.
Corporate Accounting and Reporting
The Greenhouse Gas Protocol Corporate Accounting and Reporting Standard helps companies and other organizations to identify, calculate, and report GHG emissions by outlining a standard for accurate, complete, consistent, relevant and transparent accounting and reporting by companies and organizations.
All three of the above reporting standards can be downloaded free of charge from the WRI website